Monoazo dyestuffs insoluble in water



Patented June 18, 1940 MONOA ZO DYESTUFFS INSOLUBLE 1N WATER Ernst Fischer, Offenbach-on-the-Main,

Ger-

many, assignor to General Aniline & Film Corporation, a corporation of Delaware No Drawing. Application January 4, 1939, Se-

rial No. 249,249. In Germany January 6,

4 Claims.

The present invention relates to monoazo dyestuffs insoluble in Water; more particularly, 1t relates to dyestuffs of the following general formula:

H N OH Z\ CO.NH.aryl

wherein X1 stands for hydrogen, an alkyl-, alkoxy-, aralkoxy-, aryloxy-group or halogen;

X2 and X3 mean hydrogen, an alkyl-, alkoxye,

aralkoxy-, aryloxy-group, halogen or the group ooN always one of the two substituents X2 and X3, not both simultaneously, being the group R1 CON/ I I v 'R1 and R2 being alkyl, aralkyl-, arylor hydroaromatic radicals which may be connected in a hetero-cyclic ring system; and Z stands for a carbazole, diphenylene oxide or diphenylene sulfide radical.

I have found'that valuable pigment dyestufi's may be obtained by coupling the diazo-compouncl from an amine of the general formula:

wherein X1 stands for hydrogen, an alkyl-,

alkoxy-, aralkoxy-, aryloxy-group or halogen; X2 and X3 mean hydrogen, an alkyl-, alkoxy-,

aralkoxy-., aryloxy-group, halogen or the group always one of the two substituents X2 and X3, not both simultaneously, being the group GON 6 R1 and R2 being alkyl-, aralkyl-, arylor hydroaromatic radicals which may be connected in a hetero-cyclic ring system, with an arylide of 2- hydroxycarbazole-3-carboxylic acid, 3-hydroxy- 10 diphenylene oxide-2-carboxylic acid or 3-hydroxydiphenylene sulfide-2-carboxylic acid, only such dyestuff components being used as do not contain any group lending solubility in water, such as the sulfonic or carboxylic acid group. 15

The new dyestulfs yield generally brown tints which, depending upon the kind of the diazocompound used, extend to black-brown and have good properties of fastness. They'are insoluble in water, but very easily soluble in many organic 20 solvents, for instance, hydrocarbons, alcohols, esters, ketones and can be used for coloring these solvents as well as the lacquers prepared by means of the solvents, such as nitroor acetyle cellulose lacquers, films or plastic masses. They 25 are also very suitable for coloring varnishes, candles and fats. Owing to the different substituents present in'the dyestuffs the suitability of the organic solvents named varies, but the ,most' suitable solvents may easily be ascertained 30 v by experiment.

In comparison with the dyestuffs described in German Patents Nos. 551,880, 594,326 and 596,753, the dyestuffs obtainable by this invention are distinguished by their enhanced solubility in 36 organic solvents so that they are very suitable for coloring bodies of the aforesaid kind, whereas the dyestuffs of the said patents have either no solubility in organic solvents or a solubility too small for these purposes. 40

The following examples serve to illustrate the invention, but they are not intended to limit it thereto: 9

1. 29.8 grams of 1-amino-2-methoxybenzene-5- (carbonyl-N(n-) butylaminobenzene) are diaz- 45 otized inthe usual manner. In order to bind the excess of mineral acid sodium acetate is added to the diaZo-solution and the whole is stirred into a solution of 33.7 grams of 2-hydroxycarbazole-3- (carbonyl-1'-amino-4-chlorobenzene) in dilute 50 caustic soda solution. When the coupling is finished the dyestuif formed is filtered with sue tion, washed well and dried. It is a brown powder which dissolves easily in butyl alcohol, butyl acetate, ethyl acetate and other organic solvents and colors cellulose ester lacquers vivid brown tints of good properties of fastness. The dyestuff corresponds with the following formula:

C4Hs( /OON CflHfi OH Cl coNH 2. 19.2 grams of 1-aminobenzene-3-(carbonyldiethylamine) are diazotized in the usual manher. The diazo-solution is made neutral to Congo paper by means of sodium acetate. It is then introduced, while stirring, into a solution of 33.7 grams of 2-hydroxycarbazole-3-(carbonyl-1- amino-4-chlorobenzene) in dilute caustic soda solution. The dyestuff formed is filtered with suction, washed Well and dried. It dissolves eas ily in butyl acetate, xylene and other organic solvents and colors lacquers fast brown tints which are somewhat more yellowish than those obtainable with the product of Example 1.

3. From the diazo-compound of 30 grams of 1- aminobenzene- 3 -(carbonyl-dicyclohexylamine) and 33.3 grams of B-hydroxy-diphenylene oxide- 2- (carbonyl-1' -amino-2-methoxybenzene) there is obtained in the manner described in Examples 1 and 2 a brown pigment dyestuff which is easily soluble in acetone and xylene and colors cellulose ester lacquers brown tints of good fastness to light.

4. The pigment dyestuff obtainable as described in Examples 1 and 2 from the diazo-compound of 27.8 grams of 1-amino-2-methoxybenzene-5-(carbonyl-n-dibutylamine) and 31.9 grams of 3-hydroxydiphenylene sulfide-2-car bonylaminobenzine is a brown powder which dissolves easily in organic solvents, such as esters, hydrocarbons and the like and colors cellulose ester lacquers fast brown tints.

5. By using in Example 1 instead of 29.8 grams or l-amino-Z-methOxyb enzene-S- (carbonyl-N- (n-)butylamino-benzene) 33.2 grams of 1-amino- 2-methoxybenzene-5- (carbonyl- N -benzylaminobenzene), a dyestufi of similarly good properties of fastuess is obtained which colors the various organic solvents and the lacquers prepared therewith reddish-brown tints.

The following table illustrates a number of other monoazo dyestuffs obtainable by this invention, which are likewise easily soluble in the solvents usually applied for these purposes and have good properties of fastness:

Diazo-con'ipound from- Coupled with- Shade 1 1 -amino -2-mctl1ylbenzeno-5-(carbonyl-N (n-)butyl 2-hydroxycarbazole-3-(carbonyl-l-nmino-4'-chloro- Brown.

aminobenzcne). benzene 2 l-amino2-methoxybenzcne5-(carbonyl-n-dibutylamlne). Rcddlsh brown. 3 1 amino- Zmethoxybenzene 5- (carbonyl-dicyclo -hexyl- Do.

amino). 4 1-an1ino-4-methoxybenzenc-5-(carbonyl-N-rnethylamino- Do.

benzene). 5 1-amino-)2-methoxybenzene-5-(carbonyl-N1nctl1ylbenzyl- Do.

amine 6 1-arnino2-mctboxybcnzene-fi-(carbonyl-N-pipcridine) Do. 7 l-amino-4-methoxybenzcnc-5-(carbonyl-(liethylaminc) Brown. 8 l-aminobenzene'i-(carbonyl-diamcthylamine) l Do. 9 l-aminobenzene 4 (carbonyl-(liethylamine) Do. 10 l-arninobenzcnc- -(carbonyl-N-(n-)butyl-aminobonzenc) Do. 11 l-amln0)benzcne 3- (carbonyl N -phcnyl 2 -naphthyl- Do.

amine 12 lamino-2-chlorobenzenc-5-(curbouyl-diethylamine) Yellowisb brown. 13 l-amino-i-phcnoxybcnzcnc-fi-(carbnnyl-diethylnminc) Brown. 14 l-arnino-2-benzyloxy-bonzcne-5-(carbonyl-dietbylamino) D0. 15 lamino-2-ethoxybcnzcne-5-(curbonyl(licthylnmine) Do. 16 l nmino- 2.5 dimethoxy benzenci-(carbonyl-diethyl- Do.

amine). 17 1-amino-2-methoxybenzene-5-(carbonyl-N-cthyl-cyclo- Do.

hexylamine). 18 Lamino-Z-mcthoxybenzene-5-(carbonyl-dibenzylaminc) ..do Do. 19 l-amino2-methylbenzene-S-(carbonyl-N-cthyl-l -nmi- 2hydroxycarbazolcJi-(carbonyLU-amino4-1netboxy- Do.

naphthalene) benzene). 20 1-amino-4-chlorobcnz0110-5-(carbouyl-diphenylnmine) .do D0. 21 1-amino-2-meth0xybenzen0-5- (carbonyl-N (n-)butyl- 2 hydroxycarbazole -3- (carbonyl -2- amino naphtha- Do.

aminobcnzene). lene 22 1 amino -2- methoxybenzcnc -5- (carbonyl N (n-) butyl- 3 hydroxydiphcnylene oxide 2- carbonyl aminoben- Do.

aminobcnzcne). zene. 23 l-amino-4-methoxybcnzene-S-(carbonyl-dicthylamine) ....do Do. 24 l-amino-2methoxybenzene-fi-(cm-bonyl-n-(libutylamine) 3-hydroxydiphenylene-oxide-2-(carbonyl-1-am1no-2- methoxybenzene). Do. 25 1-am ino1- 2-methoxybenzene-S (cnrbonyl-N-tetrahydro- 2-hydroxyearbazole-3-(carbonyl-aminobenzene) Do.

qulno me 2G l-amino-2-n1ethylbenzcne-4-(carbonyl-n-(libutylarnine) Do. 27 l-amino-ikphcnoxybenzene-Slcarbonyl-diethylamine) Do. 28 l-amino-4-methylbenzene-5-(carbonyl-n-dibutylamine) Do. 29 l-amino-4-ethoxybonzcnc-5-(carhonyl diethylnminc) Do. 30 l-aminol-ben zyloxy-benzenc-S-(carbonyl-diethylamine) Do. 31 Lamino-B-mcthoxybcnzencl-(carbonyl-diethylarnine) Do. 32 l-arninn-S-chlorohcnzenc4-(carbonyl-n-dibutylnniine) Do. 33 l-amino-2-methoxybenzcnc--(carbonyl-N-benzyl-cyclo- D0.

hexylamine). 34 l-a1:oino-il-methylbenzcne-i-(carbonybdiphcnylamine)v Z-lgydroxycarbazole-3-(carbonyl-1-amino-4'-n1ethoxy- D0.

enzene 35 l-amino-2-methoxybcnzcne-5- (carbonyl-N'phenyLT- Z-hydroxycarbazole-(i- (carbonyl-1'-amino--i-cbloro Do.

aminonaphthalenc) benzene) 36 l-amino-2-methoxybcnzcnc-5-(carbonyl-diethylaniinc) 3 Bhydroxydiphenylene oxide 2 (carbonyl amino- Do.

enzenc 37 l amino 2.5 dimcthoxy -bcnzene 4 (carbonyl N (n) 3-hydroxydiphenylene-oxide-2(carbonyl-Y-amino-T- Violetish brown.

butylaminobenzcne) methoxybenzene) 38 l-amino 2.4'dimcthylbenzene-fi-(carbonyl-N-(n)-butyld0 Brown.

aminobonzenc) 39 l-arninobenzcne-3-(carbonyl-dicyclohexylamine) 3-hydroxydlphenylene-oxide-2-(carbonyl-F-amino'ZW- Do.

dimethoxybcnzene) 40 l-ammobenzene-3-(carbonyl-n-dibutylamine) do Do. 41 l-amino-2-methoxybenzene-5-(carbonyl-diethylaniinc) S-bydroxydiphenylenesulfldc-2-(carbonyl-1-amino-2- Do.

ethoxybenzene) 42 l-amino-2A-d1metbylbenzene-5-(carbonyl-N-(n)-butyldo Do.

aminobcnzene) Diazo-compound from- Coupled with- Shade 43 1-amino-2-methoxybenzene-5-(earbonyl-diethylamine) Q-methyl-2-hydroxycarbazole-3-(carbonyl-1-amino-2- Brown.

methyl-Manethoxybenzene) 44 do 9-e51hyl-2-hydroxycarbazole-3-(carb0nyl-2-aminonaph- Do.

t aene 45 l-aminobenzene-3-(carbonyl-dicyclohexylamine) Z-hydroxycarbazole -3 -(carbony1-1 -amino 2 -methyl- Do.

benzene-5-sulfonyl-diethylamine) 46 1-amino-2-methoxybenzene-5-(carbonyl-N-(n)-butyl- 2-hydroxycarbazolc3-(carbonyl-l-amin0-2-methoxy- D0.

aminobenzene) benzene-5-sulf0nyl-diethylamine) 47 l-amlno-Zanethoxybenzene-S-(carbonyl-piperidine) 2-hydroxycarbaz0le-3-(earbonyl-l-amino-2-meth0xy- Do.

benzene-5-sullonyl-n-dibutylamine) 48 1-amino-2-methoxybenzenc-5-(carbonyLN -ethy1-2- 2-hydroxyearbazole-3-(carbonyl-1-am1nobenzene-3- D0.

aminonaphthalene) carbonyl-diethylamine) Since an object of the present invention is to provide dyestuffs of good fastness properties which dyestufis are insoluble in water and alkalies, it is to be understood that the aromatic nuclei of the general formulae appearing in the appended claims do not contain any substituents which are known to render organic compounds soluble in water or alkalies and to tend to depreciate the fastness of the dyestuffs to alkalies. Substituents of this kind are, for instance, the sulfonic acid and the carboxylic acid group.

I claim:

l. The water-insoluble monoazo dyestuffs of the following general formula:

v in

wherein X1 stands for a member of the group consisting of hydrogen, alkyl, alkoxy, benzyloxy, phenoxy and halogen, X2 and X3 stand for members of the group consisting of hydrogen, alkyl, alkoxy, benzyloxy, phenoxy, halogen and the group CON always one of the two substituents X2 and X3, not both simultaneously, being the group R1 OON/ R1 and R2 being members of the group consisting of alkyl, benzyl, radicals of the benzene and naphthalene series and hydroaromatic radicals which may be connected in a heterocyclic ring system, Z stands for a radical of the group consisting of carbazole, diphenylene oxide and diphenylene sulfide and Y stands for a member of the group consisting of radicals of the benzene and naphthalene series, being insoluble in water, but very easily soluble in organic solvents and yielding generally brown tints of good properties of fastness.

The Water-insoluble monoazo dyestuif of the following formula:

OflH 01130-- NE on 01 CO.NH

being insoluble in water, but very easily soluble in organic solvents and yielding brown tints of good properties of fastness.

3. The water-insoluble monoazo dyestufl of the following formula:

being insoluble in water, but very easily soluble in organic solvents andyielding brown tints of good properties of fastness. I,

4. The water-insoluble monoazo dyestufi of the following formula:

o ON N H i 0 \CO.NH-C6H5 being insoluble in water, but very easily soluble in organic solvents and yielding brown tints of good properties of fastness.

ERNST FISCHER. 

